[1. IEC 61025:2006 Fault tree analysis (FTA).]Search in Google Scholar
[2. IEC 62502:2010 Analysis techniques for dependability - Event tree analysis (ETA).]Search in Google Scholar
[3. MATTEUCCI, M. A Tutorial on Clustering Algorithms. http://www.elet.polimi.it/upload/matteucc/Clustering/tutorial_html/index.html]Search in Google Scholar
[4. DOWNS, G. M., BARNARD, J. M. Hierarchical and non-Hierarchical Clustering.http://www.daylight.com/meetings/mug96/barnard/E-MUG95.html]Search in Google Scholar
[5. IRENE, M. M. Clustering Methods and Algorithms.http://www.cse.iitb.ac.in/dbms/Data/Courses/CS632/1999/clustering/dbms.html]Search in Google Scholar